Sock rack



FIG. 1 is a front elevational view of a sock rack showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is an enlarged rear elevational view thereof;

FIG. 4 is an enlarged left side elevational view thereof;

FIG. 5 is an enlarged top plan view thereof; and,

FIG. 6 is an enlarged bottom plan view thereof. 

The ornamental design for a sock rack, as shown and described. 